Hardware Interface Description - KORE Telematics
Hardware Interface Description - KORE Telematics
Hardware Interface Description - KORE Telematics
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XT55/56 <strong>Hardware</strong> <strong>Interface</strong> <strong>Description</strong><br />
Confidential / Released<br />
s<br />
3.7 Summary of state transitions (except SLEEP mode)<br />
Table 12: State transitions of XT55/56 (except SLEEP mode)<br />
The table shows how to proceed from one GSM mode to another (grey column = present mode, white columns = intended modes)<br />
Further mode <br />
Present mode<br />
POWER DOWN mode<br />
without charger<br />
POWER DOWN mode<br />
with charger (high level<br />
at GSM_POWER pin of<br />
XT55/56)<br />
Normal mode **)<br />
Charge-only mode *)<br />
Charging in normal AT^SMSO<br />
*) **)<br />
mode<br />
Alarm mode<br />
POWER DOWN Normal mode **) Charge-only mode *) Charging in normal mode *)**) Alarm mode<br />
--- GSM_IGT >100 ms at<br />
low level<br />
--- GSM_IGT >1 s at low<br />
level, if battery is fully<br />
charged<br />
AT^SMSO<br />
or exceptionally<br />
GSM_EMERGOFF pin > 3.2s<br />
at low level<br />
Disconnect charger (XT55/56<br />
GSM_POWER pin at low<br />
level)<br />
or AT^SMSO<br />
or exceptionally<br />
GSM_EMERGOFF pin >3.2s<br />
at low level<br />
“Charge-only<br />
mode”, again AT^SMSO<br />
or exceptionally<br />
GSM_EMERGOFF pin >3.2s<br />
at low level<br />
AT^SMSO or exceptionally<br />
GSM_EMERGOFF pin >3.2s<br />
at low level<br />
Connect charger to input<br />
of ext. charging circuit and<br />
GSM_POWER pin (high<br />
level at GSM_POWER)<br />
100ms < GSM_IGT <<br />
500ms at low level<br />
--- No automatic transition,<br />
but via “POWER DOWN”<br />
No automatic transition,<br />
but via “Charge in Normal<br />
mode”<br />
Disconnect charger from<br />
input of ext. charging<br />
circuit and module’s<br />
GSM_POWER pin<br />
GSM_IGT >100ms at low<br />
level<br />
No direct transition, but via<br />
“Charge-only mode” or<br />
“Normal mode”<br />
GSM_IGT >1 s at low level<br />
Connect charger to<br />
GSM_POWER pin at<br />
XT55/56 (high level at<br />
GSM_POWER)<br />
Wake-up from POWER<br />
DOWN mode (if activated<br />
with AT+CALA)<br />
Wake-up from POWER<br />
DOWN mode (if activated<br />
with AT+CALA)<br />
AT+CALA followed by<br />
AT^SMSO. XT55/56 enters<br />
Alarm mode when specified<br />
time is reached.<br />
--- GSM_IGT >1s at low level AT+CALA followed by<br />
AT^SMSO. XT55/56 enters<br />
Alarm mode when specified<br />
time is reached and<br />
V GSM_BATT+ >3.2V<br />
AT^SMSO --- No direct transition<br />
AT^SMSO if charger is<br />
connected<br />
GSM_IGT >100ms at low<br />
level<br />
---<br />
*)<br />
See Chapter 3.5.4 for details on the charging mode<br />
**) Normal mode covers TALK, DATA, GPRS, IDLE and SLEEP modes<br />
XT55/56_hd_v02.06a Page 53 of 125 17.12.2004
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